#GLF 1.0
#D Crystal&decay 2700
#D
#D A p150 gun fires at a pair of pentadecathlons.  When the first glider
#D hits the PDs, it is reflected back and hits the second, forming a
#D honey farm.  Subsequent gliders form a crystal growing upstream.  When
#D the crystal reaches an eater near the gun, it begins to decay.
#D When it's all gone, the cycle begins again.
#D
#D The period of this pattern is 2700, but by moving the PDs, any period
#D of the form  750 + 1950n  (n>=0)  can be obtained.
#D Dean Hickerson, dean@ucdmath.ucdavis.edu  3/27/90
x = -19, y = -23, width = 78, height = 90
5boo$5boo3$5bo$4b3o$3bo3bo$5bo18boo$bbo5bo15bobo$bbo5bo16b3o12bo$3bo3b
o7boo9b3o8b4o$4b3o8boo8b3o8b4o$24bobo9bobbo9boo$24boo10b4o9boo$37b4o$
40bo4$7bo$5bobo$6boo4$oo3boo$$bo3bo$bb3o$bb3o3$35bo$33b3o$3boo27bo$3b
oo27boo7$20boo$20bo$21b3o$23bo25$66boo6boo$65bobbo4bobbo$64b6obb6o$65b
obbo4bobbo$66boo6boo8$59b3o$59bobo$59b3o$59b3o$59b3o$59b3o$59bobo$59b
3o!
